ES-08        Melody Door Chime   (DC 3V)
(5 ~ 12 melodies depending on the IC supplied in the kit purchased)
Please refer to IC datasheets for details :

A CMOS melody generator IC is used to synthesize  5~ 12  popular melodies.  The IC can be  programmed to operate in various modes .  For this kit, two buttons are provided.  The  "repeat" button starts the same melody that was last played whereas the "select" button  causes the circuit to play a different tune every time.  Comes with Volume control trimmer pot.   
(battery holder & 2 1/4   inch 8 ohm  speaker included)     

                Click here for  UM348x datasheet (pdf)